Sample flask route for form display and form validation

sample_route.py

# this is our main page
@app.route("/", methods=['GET','POST'])
def index():

	# get Idea form from models.py
	idea_form = models.IdeaForm(request.form)
	
	# if form was submitted and it is valid...
	if request.method == "POST" and idea_form.validate():
	
		# get form data - create new idea
		idea = models.Idea()
		idea.creator = request.form.get('creator','anonymous')
		idea.title = request.form.get('title','no title')
		idea.slug = slugify(idea.title + " " + idea.creator)
		idea.idea = request.form.get('idea','')
		idea.categories = request.form.getlist('categories') # getlist will pull multiple items 'categories' into a list
		
		idea.save() # save it

		# redirect to the new idea page
		return redirect('/ideas/%s' % idea.slug)

	else:

		# for form management, checkboxes are weird (in wtforms)
		# prepare checklist items for form
		# you'll need to take the form checkboxes submitted
		# and idea_form.categories list needs to be populated.
		if request.method=="POST" and request.form.getlist('categories'):
			for c in request.form.getlist('categories'):
				idea_form.categories.append_entry(c)

		# render the template
		templateData = {
			'ideas' : models.Idea.objects(),
			'categories' : categories,
			'form' : idea_form
		}

		return render_template("main.html", **templateData)

Do you know how to do the exact same thing, retrieve the categories submitted on the form and append it but using flask-wtf?

I'm trying to do it but I can't figure it out!

salamat sa helmet heroes mga tanga